EPSG:4274 — Datum 73

Geographic 2D · Portugal - mainland - onshore

Export Formats

OGC WKT

GEOGCS[
    "Datum 73",
    DATUM[
        "Datum_73",
        SPHEROID["International 1924",6378388,297],
        TOWGS84[-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4274"]
]

WKT2

GEOGCRS[
    "Datum 73",
    DATUM[
        "Datum 73",
        ELLIPSOID[
            "International 1924",
            6378388,
            297,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7022]
        ],
        ID["EPSG",6274]
    ],
    CS[ellipsoidal,2,ID["EPSG",6422]],
    AXIS["Geodetic latitude (Lat)",north],
    AXIS["Geodetic longitude (Lon)",east],
    ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
    ID["EPSG",4274]
]

PROJ.4

+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4274", "+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4274,
  "name": "Datum 73",
  "kind": "geographic 2D",
  "area": "Portugal - mainland - onshore",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    36.95,
    -9.56,
    42.16,
    -6.19
  ],
  "proj4": "+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4274, 'EPSG', 4274, '+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs', 'GEOGCS["Datum 73",DATUM["Datum_73",SPHEROID["International 1924",6378388,297],TOWGS84[-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4274"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+ellps=intl"
  "+towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4274=GEOGCS["Datum 73",DATUM["Datum_73",SPHEROID["International 1924",6378388,297],TOWGS84[-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4274"]]

Related Coordinate Systems

Available Transformations (11)

Transformation	Source → Target	Accuracy (m)
Datum 73 to ETRS89-PRT [1995] (6)	4274 → 11108	0.1
Datum 73 to WGS 84 (4)	4274 → 4326	1
Datum 73 to ETRS89 (3)	4274 → 4258	1
Datum 73 to ETRS89 (1)	4274 → 4258	2
Datum 73 to WGS 84 (1)	4274 → 4326	2
Datum 73 to ETRS89-PRT [1995] (5)	4274 → 11108	2
Datum 73 to ETRS89-PRT [1995] (4)	4274 → 11108	3
Datum 73 to WGS 84 (3)	4274 → 4326	5
Datum 73 to ETRS89 (2) Deprecated	4274 → 4258	—
Datum 73 to WGS 84 (2) Deprecated	4274 → 4258	—

Other CRS using Datum 73

Frequently Asked Questions

How do I add EPSG:4274 to GeoServer?

Add the following definition to your GeoServer configuration:

4274=GEOGCS["Datum 73",DATUM["Datum_73",SPHEROID["International 1924",6378388,297],TOWGS84[-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4274"]]

Read the full GeoServer guide →

How do I add EPSG:4274 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4274, 'EPSG', 4274, '+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs', 'GEOGCS["Datum 73",DATUM["Datum_73",SPHEROID["International 1924",6378388,297],TOWGS84[-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4274"]]');

Read the full PostGIS guide →

How do I add EPSG:4274 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+ellps=intl"
  "+towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4274 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4274", "+proj=longlat +ellps=intl +towgs84=-239.749,88.181,30.488,-0.263,-0.082,-1.211,2.229 +no_defs +type=crs");

Read the full Proj4js guide →